49 lines
No EOL
2.1 KiB
JavaScript
49 lines
No EOL
2.1 KiB
JavaScript
"use strict";
|
|
Object.defineProperty(exports, "__esModule", { value: true });
|
|
exports.throttle = void 0;
|
|
var lift_1 = require("../util/lift");
|
|
var OperatorSubscriber_1 = require("./OperatorSubscriber");
|
|
var innerFrom_1 = require("../observable/innerFrom");
|
|
function throttle(durationSelector, config) {
|
|
return lift_1.operate(function (source, subscriber) {
|
|
var _a = config !== null && config !== void 0 ? config : {}, _b = _a.leading, leading = _b === void 0 ? true : _b, _c = _a.trailing, trailing = _c === void 0 ? false : _c;
|
|
var hasValue = false;
|
|
var sendValue = null;
|
|
var throttled = null;
|
|
var isComplete = false;
|
|
var endThrottling = function () {
|
|
throttled === null || throttled === void 0 ? void 0 : throttled.unsubscribe();
|
|
throttled = null;
|
|
if (trailing) {
|
|
send();
|
|
isComplete && subscriber.complete();
|
|
}
|
|
};
|
|
var cleanupThrottling = function () {
|
|
throttled = null;
|
|
isComplete && subscriber.complete();
|
|
};
|
|
var startThrottle = function (value) {
|
|
return (throttled = innerFrom_1.innerFrom(durationSelector(value)).subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, endThrottling, cleanupThrottling)));
|
|
};
|
|
var send = function () {
|
|
if (hasValue) {
|
|
hasValue = false;
|
|
var value = sendValue;
|
|
sendValue = null;
|
|
subscriber.next(value);
|
|
!isComplete && startThrottle(value);
|
|
}
|
|
};
|
|
source.subscribe(OperatorSubscriber_1.createOperatorSubscriber(subscriber, function (value) {
|
|
hasValue = true;
|
|
sendValue = value;
|
|
!(throttled && !throttled.closed) && (leading ? send() : startThrottle(value));
|
|
}, function () {
|
|
isComplete = true;
|
|
!(trailing && hasValue && throttled && !throttled.closed) && subscriber.complete();
|
|
}));
|
|
});
|
|
}
|
|
exports.throttle = throttle;
|
|
//# sourceMappingURL=throttle.js.map
|